FIRE crews put out a fire at a mid-terraced building at Clooney Terrace in the Waterside area of Derry.
The incident happened in the early hours of Thursday morning but details have only now been released.
A spokesman said: “Firefighters wearing breathing apparatus used a hosereel jet to deal with the fire.
“Crews ventilated the smoke from the premises.
“The cause of the fire appeared accidental.
“Fire crews from Crescent Link and Northland stations attended the incident’.”
